Looting as well as arson as a result of gangs of youths spread Monday from poor northern districts of london towards the south, to tourist locations of the capital and also to Britain’s second-largest city as law enforcement flooded the streets and introduced scores of new arrests. Prime Minister David Cameron along with other senior officials broke off their holidays and came back to London to make an effort to stem the most detrimental outbreak of city violence in britain in a quarter-century. It began Saturday night right after a peaceful protest over the police shooting of a 29-year-old man in an operation to control illegal firearms.